Studies have shown that the mid-afternoon nap boosts productivity, decreases stress, and generally increases well-being.
For example -- take a look at these, just three links out of many you get from searching on "nap benefits":
- http://drdeborahserani.blogspot.com/2006/06/benefits-of-power-napping.html
- http://www.talkaboutsleep.com/sleep-disorders/archives/insomnia_drjacobs_benefits_of_naps.htm
- http://www.metronaps.com/about/science_faq.php
Furthermore, an increase in naptime would contribute to the general Slowing of things - but that's for another post.
I say, "Chill, America - you deserve more rest!"